The growing population, overcrowded roads and migration to cities all are good reasons why autonomous cars are required. Google has got one step closer to its aim of replacing every human on Earth with gadgets. The Google car is a project by Google that involves developing prosthetic technology for autonomous cars. The software powering Google's cars is called Google Chauffeur.
Technology Used
“Heart of this system" is a laser range finder mounted on the roof of the car. The device, a Velodyne 64-beam laser, generates a detailed 3-D map of the environment. The car then combines the laser measurements with high-resolution maps of the world, producing various types of data models that allow it to drive itself while avoiding hindrances and respecting traffic laws. The vehicle carries other sensors, which include: four radars, mounted on the front and rear bumpers, that allow the car to "see" far enough to be able to deal with fast traffic on freeways; a camera, positioned near the rear-view mirror, that detects traffic lights; and a GPS, inertial measurement unit, and wheel encoder, that determine the vehicle's location and keep track of its movements. 
Future aspects
It has plans for a new dashboard display for its autonomous cars, which would help people understand what the autonomous car is doing and when they might want to take over. The cars’ software was not only much better at maintaining a safe distance from the vehicle ahead than the human drivers but that the computer brains also accelerated and came to a halt much more smoothly than the professional drivers. Prosthetic technology could significantly reduce the staggering number of people killed in car accidents, over a million worldwide each year.Even a disabled person can drive using their mind. It’s a revolution if it happens that anyone can drive.
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